The number of non-negative integral solutions of a+b+c+d=n, n N , is

JEE Advanced Mathematics question

The number of non-negative integral solutions of , , is

Answer: (B)

*Stars and bars:* arrange identical stars and identical bars in a row; the bars cut the stars into 4 (possibly empty) parts . Number of arrangements:

{}^{n+3}==.

*Generat

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Question ID VK-108225